PROCESS FOR THE PREPARATION OF ENANTIOMERIC FORMS OF 2,3-DIAMINOPROPIONIC ACID DERIVATIVES
申请人:SANOFI
公开号:US20150018554A1
公开(公告)日:2015-01-15
The disclosure relates to a process for the preparation of the enantiomeric forms of 2,3-diaminopropionic acid derivatives of formula I,
wherein R1, R2 and R3 are defined as in the disclosure, by racemate resolution. The separation of the racemate into its enantiomers takes place through formation of diastereomeric salts upon addition of an enantiomerically pure auxiliary, and subsequent separation by fractional crystallization.
该公开涉及通过外消旋体分离制备式I的2,3-二氨基丙酸衍生物的对映体形式的方法,其中R1、R2和R3如公开所定义。将外消旋体分离为其对映体是通过加入对映纯辅助剂形成不对称盐,并随后通过分数结晶分离实现的。